git.y1.nz

commit 32fecd08d8e125e209690ba20130c1a73364b0b5
parent f4674cf102ec6379be826db96124af3a6746f20b
Author: Toxa <untoxa@mail.ru>
Date:   Tue, 20 Feb 2024 23:09:12 +0300

prevent ROM bank switching on the real hardware when trying to enable or switch SRAM banks on the MegaDuck

Diffstat:
M
gbdk-lib/include/gb/gb.h
16
++++++++++++++++

1 file changed, 16 insertions(+), 0 deletions(-)
diff --git a/gbdk-lib/include/gb/gb.h b/gbdk-lib/include/gb/gb.h
@@ -566,6 +566,16 @@ __endasm; \
 */
 #define SWITCH_ROM(b) (_current_bank = (b), rROMB0 = (b))
 
+#if defined(__TARGET_duck)
+
+#define SWITCH_RAM(b)
+
+#define ENABLE_RAM
+
+#define DISABLE_RAM
+
+#else
+
 /** Switches SRAM bank on MBC1 and other compatible MBCs
     @param b   SRAM bank to switch to
 
@@ -575,10 +585,16 @@ __endasm; \
 */
 #define SWITCH_RAM(b) (rRAMB = (b))
 
+/** Enables SRAM on MBC1 and other compatible MBCs
+*/
 #define ENABLE_RAM (rRAMG = 0x0A)
 
+/** Disables SRAM on MBC1 and other compatible MBCs
+*/
 #define DISABLE_RAM (rRAMG = 0x00)
 
+#endif
+
 /** Makes MEGADUCK MBC switch the active ROM bank
     @param b   ROM bank to switch to (max `3` for 64K, or `7` for 128K)
 */

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